Picture frame



FIG. 1 Is a front perspective view of the picture frame

FIG. 2 Is a rear perspective view of the picture frame

FIG. 3 Is a cross-sectional view along the line 3—3

FIG. 4 Is a cross-sectional view along the line 4—4; and,

FIG. 5 Is a detailed view of the section marked in FIG. 4. 

The ornamental design for a picture frame, in the form shown and described in the Figures. 